package com.liang;

import redis.clients.jedis.Jedis;

import java.util.Set;

public class TestPing {
    public static void main(String[] args) {
        //new jedis对象
        Jedis jedis = new Jedis("127.0.0.1",6379);
        System.out.println(jedis.ping());

        System.out.println("清空数据:"+jedis.flushDB());
        System.out.println("判断某个键是否存在:"+jedis.exists("username"));
        System.out.println("新增<'username',lwh'>的键值对:"+jedis.set("username","lwh"));
        System.out.println("新增<'password'password'>的键值对:"+jedis.set("password","password"));
        System.out.print("系统巾所有的键如下:");
        Set<String> keys = jedis .keys( "*");
        System.out.println(keys);
        System.out.println("删除键password;"+jedis.del( "password"));
        System.out.println("判断键password是否存在:"+jedis.exists( "password"));
        System.out.println("查看键username所存储的值的类型:"+jedis.type("username"));
        System.out.println("随机返回key空间的一个:"+jedis.randomKey());
        System.out.println("重命名key: "+jedis.rename(  "username",  "name"));
        System.out.println("取出改后的name:"+jedis.get("name"));
        System.out.println("按索引查询:"+jedis.select( 0));
        System.out.println("删除当前选择数据库中的所有key:"+jedis.flushDB());
        System.out.println("返回当前数据库巾key的数目:"+jedis.dbSize());
        System.out.println("删除所有数据库中的所有key:"+jedis.flushAll());

    }
}
